<?php 
if (isset($_GET["pg"]))
{
switch ($_GET["pg"])
  { 
  case 'question_etape1': include('question_etape1.php');
     break; 
	 case 'question_etape2': include('question_etape2.php');
     break;  
	  case 'question_etape3': include('question_etape3.php');
     break; 
	   case 'question_etape4': include('question_etape4.php');
     break;  
	case 'question_etape5': include('question_etape5.php');
     break; 
	
	    default : include('question_etape1.php'); 
	} 
	}
else {header('location:questionnaire.php?pg=question_etape1');}
?>